0.0.1 Working frontend demo

This will be the demo version of the app. No fancy design and no backend.

The following should work:

####Misc
- [ ] A header that is always visible with a "search" and "back" button

####Search
- [ ] Search view with controller
- [ ] Have a set of products that can be filtered by search input
- [ ] Be able to click a product and see more information

####Product
- [ ] A product view with controller
- [ ] Median price and etc info
- [ ] Comparison matrix by stores and prices
- [ ] Be able to click a store

####Store
- [ ] A store view with controller
- [ ] See information such as location, opening times, etc.